3v4l.org

run code in 300+ PHP versions simultaneously
<?php $dword = '00000000'; for ($i = 0; $i < 1000; ++$i){ $dword = dword_inc($dword); echo $dword."\n"; } function dword_inc($dword){ if (empty($dword)){ return '1'; } $last = $dword{strlen($dword)-1}; if ($last == 9){ $last = 'A'; }else{ $last++; } if ($last == 'G'){ $last = 0; if (strlen($dword) > 1){ $dword2 = dword_inc(substr($dword, 0, strlen($dword)-1)); $dword = $dword2.'0'; }else{ $dword = '1'.$dword; } }else{ $dword{strlen($dword)-1} = $last; } return $dword; }

Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).

VersionSystem time (s)User time (s)Memory (MiB)
8.3.60.0070.01018.43
8.3.50.0210.01022.05
8.3.40.0110.00418.59
8.3.30.0140.00418.85
8.3.20.0060.00320.29
8.3.10.0070.00023.65
8.3.00.0060.00619.05
8.2.180.0110.00716.36
8.2.170.0140.00722.96
8.2.160.0130.00320.52
8.2.150.0070.00724.18
8.2.140.0070.00724.66
8.2.130.0070.00026.16
8.2.120.0070.00019.54
8.2.110.0040.00820.51
8.2.100.0080.00417.91
8.2.90.0040.00418.03
8.2.80.0030.00617.97
8.2.70.0030.00617.38
8.2.60.0090.00317.66
8.2.50.0030.00618.07
8.2.40.0030.00519.57
8.2.30.0080.00018.12
8.2.20.0020.00517.55
8.2.10.0070.00017.89
8.2.00.0000.00819.36
8.1.280.0110.00725.92
8.1.270.0060.00324.01
8.1.260.0040.00426.35
8.1.250.0070.00028.09
8.1.240.0030.00621.99
8.1.230.0090.00320.84
8.1.220.0040.00417.74
8.1.210.0080.00018.77
8.1.200.0030.00617.10
8.1.190.0090.00017.00
8.1.180.0030.00518.10
8.1.170.0040.00418.41
8.1.160.0040.00421.95
8.1.150.0000.00718.49
8.1.140.0000.00717.38
8.1.130.0070.00017.74
8.1.120.0000.00717.39
8.1.110.0000.00817.30
8.1.100.0000.00717.23
8.1.90.0000.00717.26
8.1.80.0040.00417.29
8.1.70.0000.00717.31
8.1.60.0030.00517.38
8.1.50.0000.00817.44
8.1.40.0060.00317.29
8.1.30.0080.00017.52
8.1.20.0030.00617.43
8.1.10.0060.00317.40
8.1.00.0040.00417.36
8.0.300.0000.00720.04
8.0.290.0040.00416.58
8.0.280.0070.00018.25
8.0.270.0000.00817.03
8.0.260.0000.00617.13
8.0.250.0030.00316.85
8.0.240.0030.00316.87
8.0.230.0070.00016.77
8.0.220.0030.00316.73
8.0.210.0070.00016.88
8.0.200.0030.00316.88
8.0.190.0070.00016.94
8.0.180.0030.00316.82
8.0.170.0040.00416.90
8.0.160.0000.00716.77
8.0.150.0040.00416.63
8.0.140.0030.00516.78
8.0.130.0000.00813.29
8.0.120.0040.00416.89
8.0.110.0000.00816.71
8.0.100.0080.00016.68
8.0.90.0050.00216.72
8.0.80.0160.00616.74
8.0.70.0070.00016.71
8.0.60.0070.00016.70
8.0.50.0040.00416.67
8.0.30.0090.01217.14
8.0.20.0140.00917.40
8.0.10.0040.00416.83
8.0.00.0100.01016.46
7.4.330.0000.00515.02
7.4.320.0080.00016.65
7.4.300.0030.00316.59
7.4.290.0080.00016.61
7.4.280.0060.00316.63
7.4.270.0040.00416.48
7.4.260.0020.00516.40
7.4.250.0030.00516.58
7.4.240.0050.00316.65
7.4.230.0040.00416.37
7.4.220.0110.01116.47
7.4.210.0210.00416.61
7.4.200.0040.00416.62
7.4.160.0140.01216.80
7.4.150.0170.01017.40
7.4.140.0180.00717.86
7.4.130.0170.01216.57
7.4.120.0110.01216.50
7.4.110.0150.00616.46
7.4.100.0060.02116.61
7.4.90.0120.01216.53
7.4.80.0160.01019.39
7.4.70.0170.01716.83
7.4.60.0170.00516.67
7.4.50.0030.00616.26
7.4.40.0090.01216.46
7.4.30.0070.01516.52
7.4.00.0070.01014.77
7.3.330.0000.00613.17
7.3.320.0060.00013.39
7.3.310.0050.00316.48
7.3.300.0040.00416.34
7.3.290.0080.01216.37
7.3.280.0110.01116.35
7.3.270.0160.00617.40
7.3.260.0160.01016.61
7.3.250.0200.01016.53
7.3.240.0150.01116.46
7.3.230.0130.01016.68
7.3.210.0140.00716.46
7.3.200.0140.00819.39
7.3.190.0160.00816.32
7.3.180.0100.01016.47
7.3.170.0130.00916.58
7.3.160.0110.01116.58
7.3.120.0040.01215.14
7.2.330.0220.00316.60
7.2.320.0030.01716.43
7.2.310.0110.01116.66
7.2.300.0030.01716.82
7.2.290.0060.01516.72
7.2.60.0030.01217.09
7.2.00.0060.00919.32
7.1.200.0170.01115.43
7.1.100.0000.00918.30
7.1.70.0120.00317.27
7.1.60.0130.01319.70
7.1.50.0070.01816.93
7.1.00.0100.07022.57
7.0.200.0000.00816.70
7.0.140.0070.07322.00
7.0.60.0030.04320.03
7.0.50.0100.03317.88
7.0.40.0000.05019.98
7.0.30.0470.07720.06
7.0.20.0400.08020.12
7.0.10.0030.05320.05
7.0.00.0170.07720.32
5.6.280.0070.07320.99
5.6.210.0100.07320.73
5.6.200.0000.06018.28
5.6.190.0070.08020.39
5.6.180.0330.06020.68
5.6.170.0200.05020.51
5.6.160.0000.06320.48
5.6.150.0070.07718.15
5.6.140.0070.08718.15
5.6.130.0100.07018.15
5.6.120.0100.07321.14
5.6.110.0030.07321.14
5.6.100.0270.06321.14
5.6.90.0130.08321.02
5.6.80.0100.07020.39
5.5.350.0300.07320.34
5.5.340.0100.07017.92
5.5.330.0030.05720.19
5.5.320.0430.07720.20
5.5.310.0400.07020.52
5.5.300.0130.08018.04
5.5.290.0130.06017.98
5.5.280.0100.04020.64
5.5.270.0130.04320.80
5.5.260.0070.05020.72
5.5.250.0070.06720.59
5.5.240.0130.05020.15
5.4.450.0330.04743.75
5.4.440.0300.04737.18
5.4.430.0230.04733.64
5.4.420.0200.04733.62
5.4.410.0300.04333.62
5.4.400.0600.04033.61
5.4.390.0230.04732.42
5.4.380.0500.04718.45
5.4.370.0300.05318.61
5.4.360.0470.05718.73
5.4.350.0270.05718.56
5.4.340.0070.07018.68
5.4.320.0100.03912.50
5.4.310.0080.04712.50
5.4.300.0080.03912.51
5.4.290.0110.03912.50
5.4.280.0080.03912.40
5.4.270.0160.04912.40
5.4.260.0100.04212.40
5.4.250.0090.04112.40
5.4.240.0050.04312.39
5.4.230.0080.04612.39
5.4.220.0070.03912.39
5.4.210.0070.03912.39
5.4.200.0110.04612.39
5.4.190.0060.04012.39
5.4.180.0060.04012.39
5.4.170.0090.03912.39
5.4.160.0070.04012.39
5.4.150.0080.04812.39
5.4.140.0120.03712.07
5.4.130.0120.03612.06
5.4.120.0090.03712.02
5.4.110.0120.03812.02
5.4.100.0090.05612.01
5.4.90.0030.04512.01
5.4.80.0060.04612.01
5.4.70.0080.04812.00
5.4.60.0080.03812.01
5.4.50.0080.03812.01
5.4.40.0090.03612.00
5.4.30.0060.04012.00
5.4.20.0070.03812.00
5.4.10.0050.04011.99
5.4.00.0110.04611.48
5.3.290.0090.04512.80
5.3.280.0090.04712.71
5.3.270.0140.04212.73
5.3.260.0080.04612.72
5.3.250.0080.05812.72
5.3.240.0110.05012.72
5.3.230.0100.04012.70
5.3.220.0110.04012.68
5.3.210.0100.04112.68
5.3.200.0120.03612.68
5.3.190.0080.04412.68
5.3.180.0130.04412.67
5.3.170.0060.04012.67
5.3.160.0050.05312.67
5.3.150.0050.05812.67
5.3.140.0120.05012.66
5.3.130.0140.04612.66
5.3.120.0080.04512.66
5.3.110.0110.04612.66
5.3.100.0090.04412.12
5.3.90.0140.04012.10
5.3.80.0070.04512.09
5.3.70.0120.03412.09
5.3.60.0110.03712.07
5.3.50.0080.04112.02
5.3.40.0070.04212.02
5.3.30.0090.03711.98
5.3.20.0070.03811.76
5.3.10.0070.03911.73
5.3.00.0090.03711.71
5.2.170.0110.0309.22
5.2.160.0090.0309.22
5.2.150.0100.0319.22
5.2.140.0070.0339.21
5.2.130.0130.0269.18
5.2.120.0080.0319.18
5.2.110.0100.0309.18
5.2.100.0030.0359.18
5.2.90.0060.0339.17
5.2.80.0100.0329.17
5.2.70.0060.0349.17
5.2.60.0060.0359.12
5.2.50.0080.0329.09
5.2.40.0070.0349.07
5.2.30.0100.0309.04
5.2.20.0070.0329.04
5.2.10.0090.0308.94
5.2.00.0020.0378.80
5.1.60.0060.0278.09
5.1.50.0060.0298.09
5.1.40.0070.0268.07
5.1.30.0070.0298.41
5.1.20.0070.0298.44
5.1.10.0070.0288.16
5.1.00.0080.0278.16
5.0.50.0080.0296.65
5.0.40.0080.0306.51
5.0.30.0070.0446.33
5.0.20.0040.0326.29
5.0.10.0040.0256.27
5.0.00.0080.0416.27
4.4.90.0050.0374.78
4.4.80.0070.0174.76
4.4.70.0040.0274.75
4.4.60.0060.0244.75
4.4.50.0050.0214.77
4.4.40.0060.0374.71
4.4.30.0050.0224.76
4.4.20.0050.0204.84
4.4.10.0090.0164.85
4.4.00.0040.0374.76
4.3.110.0040.0234.67
4.3.100.0050.0184.67
4.3.90.0040.0234.64
4.3.80.0060.0274.58
4.3.70.0060.0194.63
4.3.60.0020.0284.63
4.3.50.0050.0224.63
4.3.40.0050.0354.54
4.3.30.0060.0213.33
4.3.20.0050.0203.32
4.3.10.0050.0243.26
4.3.00.0070.01731.27

preferences:
44.51 ms | 401 KiB | 5 Q